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--- module:dyndns [2010/02/24 15:45] – created digitalman
+++ module:dyndns [2020/08/23 15:08] (current) – Change links from viewcvs/cvsweb to gitlab. digital man
@@ Line 1: / Line 1: @@
-====== DynDNS ======
+====== Dynamic DNS ======
-FIXME
+The Synchronet Dynamic DNS module is used in combination with the Synchronet Dynamic Domain Name System (DynDNS) Service hosted on [[bbs:Vertrauen]] to provide free ''.synchro.net'' hostnames to Synchronet sysops.
+===== yourbbs.synchro.net =====
+If you'd like a ''synchro.net'' hostname, [[person:digital man|I]] offer a free, very easy-to-use
+dynamic hostname service exclusively for Synchronet sysops. Your ''synchro.net''
+hostname will always point to your current IP address, as long as your BBS
+is running. Using this service requires Synchronet v3.10 or later.
+===== Directions =====
+. If you don't already have the ''[[dir:exec]]/dyndns.js'' file, download [[https://gitlab.synchro.net/sbbs/sbbs/-/raw/master/exec/dyndns.js|the file]] into your Synchronet ''[[dir:exec]]'' directory.
+. If you haven't already, create a QWK networking account on [[bbs:Vertrauen]]
+using your BBS's QWK-ID for the username (see [[howto:dove-net|this howto]] for more details).
+Note: You do not have to actually join [[network:DOVE-Net]] to get a ''synchro.net'' hostname, if you do not wish.
+. If you don't already have one, setup a timed event (in [[util:SCFG]]->External Programs->Timed Events) to run the
+command-line ''?dyndns //yourpass//'' periodically, where //yourpass// is the
+password you used when you created your QWK networking account on
+Vertrauen. "DYNDNS" is the suggested internal code to use for this event.
+If you have a frequently changing IP address (and Synchronet v3.11 or
+later) set "Always Run After Init/Re-init" to "Yes". With this option set
+to "Yes", frequent timed updates should not be necessary.
+If you have a static IP address, one run (update) per month should be
+sufficient.
+:!: Make sure that "Enabled" is set to "Yes".
+. After saving your changes in [[util:SCFG]], and verifying that the Terminal Server
+has recycled, check the event log window or console output to verify that
+the "DYNDNS" event has executed. You can force the event to execute with
+the (Win32) SBBSCTRL:BBS->Force Timed Event menu option, or by "touching"
+(creating or modifying) the file ''[[dir:data]]/dyndns.now''.
+. Attempt to ping or connect to services at ''//your-id//.synchro.net'', where
+//your-id// is your BBS's QWK-ID. It may take a few minutes for a new hostname
+to become active or for an existing hostname to resolve to a newly changed
+IP address.
+You're ready to go with your new ''synchro.net'' hostname :!:
+===== Options =====
+If you choose to include any ''dyndns.js'' command-line options, they must follow your password (and a space) on the configured command-line.
+''-mx //[hostname]//''
+DNS MX (mail exchange) resource records are used to designate a specific
+hostname as the "mail exchange" (receiving SMTP server) for a specific
+hostname. If there is no MX record, then the hostname itself is assumed to
+perform the role of "mail exchange". Some receiving SMTP servers now require
+that the *sending* SMTP server correspond to the MX record of the "from"
+hostname. If you want to specify an MX record for your hostname, you can do
+so by adding ''-mx'' (optionally followed by a hostname) to your ''?dyndns''
+command-line (after the password). If no hostname is specified, then an MX
+record pointing back to your hostname will be created. Example: ''?dyndns password -mx mail.someother.org''
+''-hn //<base_hostname>//''
+If you want to update a hostname that is **different** than your BBS's QWK-ID,
+ou can specify that hostname (QWK-ID) on the ''?dyndns'' command-line
+(after the password) by using the ''-hn'' option followed by the hostname
+to use (not including ".synchro.net"). There must be a corresponding QWKnet
+account on Vertrauen for the specified hostname and password.
+''-ip6 //[ipv6_address]//''
+If you have a public IPv6 address, you may create/update a ''AAAA'' record along with your IPv4
+''A'' record by including the ''-ip6'' option followed by a space and your current public IPv6 address.
+Vertrauen cannot at this time automatically detect your public IPv6 address, so if your
+IPv6 address changes, you will need to change the command-line accordingly.
+''//[ip_address]//''
+If for some reason you want to specify a **different** IPv4 address than the one
+that your BBS will be using to connect with [[bbs:Vertrauen]], you can include that IP
+address on the "?dyndns" command-line (after the password). This is an
+advanced feature that you should not need to use under normal conditions, even
+if your BBS is behind a firewall/router using network address translation
+(NAT) - the DynDNS server running on [[bbs:Vertrauen]] uses your correct [[faq:tcpip#public IP]]
+address by default.
+==== modopts.ini ====
+Due to command-line length limits (63 characters), you may want to move one or more of the longer command-line options to the ''[dyndns]'' section of your ''[[dir:ctrl]]/[[config:modopts.ini]]'' file.
+The following options/keys are supported:
+^   Key       ^ Record ^ Description ^
+| ''mx''      | MX     | Mail Exchange record (hostname)   |
+| ''ip''      | A      | IP version 4 address (e.g. 172.217.4.174) |
+| ''ip6''     | AAAA   | IP version 6 address (e.g. 2607:f8b0:4007:801::200e) |
+| ''txt''     | TXT    | Text (default: BBS name) |
+| ''loc''     | LOC    | Location coordinates (see [[http://dnsloc.net/]] for details) |
+| ''wildcard'' | CNAME  | When set to ''true'', will create a wildcard record for "*.yourbbs.synchro.net" |
 ===== See Also =====
   * [[:module:|Modules]]

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